2016 summer semester Flying Robot Project 8th Team BMay 30, 2016

This week our team have made a framework of the vertical tail. Last week we had made 3D models of the tail, so we printed the models of real scale on the paper and used them as drafts. We spread the drafts on a table and fixed them with a tape, and covered the drafts with a film to protect them. We placed balsa timbers on the drafts and pinned them to the table. Attaching each timber by using glue, the framework of the elevator face and the vertical tail were completed. A little stronger timbers were used to a dividing line between the elevator face and the vertical tail.
This week the vertical tail was completed. And we found that the size of timber should be different in proportion to the required strength. The wider or thicker timber should be applied to the bone where the force concentrates or where frequently moves in flight.
However, there were some problems. This week we were going to craft a framework of the horizontal tail, but we failed to print its draft and so all four members of our team crafted only the vertical tail. This style was not effective, and we should prepare alternative work anytime.

Kazuki Ishihama
College of Arts and Science, The University of Tokyo
今週、我々のチームは垂直尾翼の骨組みを完成させました。先週尾翼の3次元データを作成していたので、それを実寸大に印刷して設計図として使いました。設計図を机に広げ、ラップを被せて机に固定し、その上に角材をピンで固定しつつ接着剤で角材をつなげていきました。途中設計図とは変更して垂直尾翼と方向舵の境界部分の角材をより強いものにしました。
今週の活動で垂直尾翼と方向舵が完成し、その過程で機体の力のかかる部分やよく動かす部分にはより強度の高い部材を用いる必要性を認識しました。また作業過程にて、制作予定であった水平尾翼に関しては印刷の不都合で作業ができず、チーム全員が同じ作業に携わり非効率な時間の使い方となってしまったことは反省点であり、常に代替作業を準備しておく必要性を感じました。